envier - pypi Package Compare versions

Comparing version 0.1.0 to 0.2.0

.github/workflows/main.yml

@@ -70,2 +70,3 @@ name: CI
           python3.9 -m pip install riot
-          riot -v run --python=${{ matrix.python-version }} test
+          riot -v run --python=${{ matrix.python-version }} smoke-test
+          riot -v run --python=${{ matrix.python-version }} tests

envier.egg-info/PKG-INFO

 Metadata-Version: 2.1
 Name: envier
-Version: 0.1.0
+Version: 0.2.0
 Summary: Python application configuration via the environment
@@ -5,0 +5,0 @@ Home-page: https://github.com/DataDog/envier

envier.egg-info/requires.txt

 
+[:python_version < "3.5"]
+typing
+
 [mypy]
 mypy

envier/env.py

@@ -51,2 +51,3 @@ import os
         parser=None,  # type: Optional[Callable[[str], T]]
+        validator=None,  # type: Optional[Callable[[T], None]]
         map=None,  # type: Optional[MapType]
@@ -67,2 +68,3 @@ default=NoDefault,  # type: Union[T, NoDefaultType]
         self.parser = parser
+        self.validator = validator
         self.map = map
@@ -72,3 +74,3 @@ self.default = default
 
-    def __call__(self, env, prefix):
+    def _retrieve(self, env, prefix):
         # type: (Env, str) -> T
@@ -148,3 +150,12 @@ source = env.source
 
+    def __call__(self, env, prefix):
+        # type: (Env, str) -> T
+        value = self._retrieve(env, prefix)
 
+        if self.validator is not None:
+            self.validator(value)
+
+        return value
+
+
 class DerivedVariable(Generic[T]):
@@ -241,2 +252,3 @@ def __init__(self, type, derivation):
         parser=None,  # type: Optional[Callable[[str], T]]
+        validator=None,  # type: Optional[Callable[[T], None]]
         map=None,  # type: Optional[MapType]
@@ -247,3 +259,3 @@ default=NoDefault,  # type: Union[T, NoDefaultType]
         # type: (...) -> EnvVariable[T]
-        return EnvVariable(type, name, parser, map, default, deprecations)
+        return EnvVariable(type, name, parser, validator, map, default, deprecations)
 
@@ -256,2 +268,3 @@ @classmethod
         parser=None,  # type: Optional[Callable[[str], T]]
+        validator=None,  # type: Optional[Callable[[T], None]]
         map=None,  # type: Optional[MapType]
@@ -262,3 +275,3 @@ default=NoDefault,  # type: Union[T, NoDefaultType]
         # type: (...) -> EnvVariable[T]
-        return EnvVariable(type, name, parser, map, default, deprecations)
+        return EnvVariable(type, name, parser, validator, map, default, deprecations)
 
@@ -303,2 +316,4 @@ @classmethod
 
+            return None
+
         # Pick only the attributes that define variables.
@@ -305,0 +320,0 @@ to_include = {

PKG-INFO

 Metadata-Version: 2.1
 Name: envier
-Version: 0.1.0
+Version: 0.2.0
 Summary: Python application configuration via the environment
@@ -5,0 +5,0 @@ Home-page: https://github.com/DataDog/envier

riotfile.py

@@ -24,2 +24,7 @@ from ast import Sub
         Venv(
+            name="smoke-test",
+            command="python -c 'import envier'",
+            pys=SUPPORTED_PYTHON_VERSIONS,
+        ),
+        Venv(
             name="black",
@@ -26,0 +31,0 @@ pkgs={"black": latest},

setup.py

@@ -30,3 +30,3 @@ from setuptools import find_packages
     python_requires=">=2.7",
-    install_requires=[],
+    install_requires=["typing; python_version<'3.5'"],
     extras_require={"mypy": ["mypy"]},
@@ -33,0 +33,0 @@ setup_requires=["setuptools_scm"],

tests/test_env.py

@@ -246,3 +246,7 @@ from typing import Optional
 
+    # Check that we are not including configuration elsewhere
+    with pytest.raises(AttributeError):
+        GlobalConfig().host
 
+
 @pytest.mark.parametrize(
@@ -315,1 +319,27 @@ "map,expected",
     assert DictConfig().foo is value
+
+
[e-mail](
+    "value,exc",
+    [
+        (0, None),
+        (512, None),
+        (-1, ValueError),
+        (513, ValueError),
+    ],
+)
+def test_env_validator(monkeypatch, value, exc):
+    monkeypatch.setenv("FOO", str(value))
+
+    class Config(Env):
+        def validate(value):
+            if not (0 <= value <= 512):
+                raise ValueError("Value must be between 0 and 512")
+
+        foo = Env.var(int, "FOO", validator=validate)
+
+    if exc is not None:
+        with pytest.raises(exc):
+            Config()
+    else:
+        assert Config().foo == value

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